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Finding the Fourth Proportional to 495.02, 683.10 and 285.19

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Solution

The fourth proportional to 495.02, 683.10 and 285.19 is: 393.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.02 : 683.10 = 285.19 : x
  2. Step 2: Convert to fraction form
    495.02/683.10 = 285.19/x
  3. Step 3: Cross multiply
    495.02x = 683.10 × 285.19
  4. Step 4: Simplify right side
    495.02x = 194,811.58
  5. Step 5: Solve for x
    x = 194,811.58/495.02
  6. Step 6: Final answer
    x = 393.54

Related Problems

Find fourth proportional to 247.51, 341.55 and 142.59
Half scale
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Double scale
Find fourth proportional to 496.02, 684.48 and 286.19
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.