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Finding the Fourth Proportional to 605.35, 835.02 and 381.19

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Solution

The fourth proportional to 605.35, 835.02 and 381.19 is: 525.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.35 : 835.02 = 381.19 : x
  2. Step 2: Convert to fraction form
    605.35/835.02 = 381.19/x
  3. Step 3: Cross multiply
    605.35x = 835.02 × 381.19
  4. Step 4: Simplify right side
    605.35x = 318,304.32
  5. Step 5: Solve for x
    x = 318,304.32/605.35
  6. Step 6: Final answer
    x = 525.82

Related Problems

Find fourth proportional to 302.67, 417.51 and 190.60
Half scale
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Double scale
Find fourth proportional to 606.35, 836.40 and 382.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.