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Finding the Fourth Proportional to 602.76, 833.15 and 438.13

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Solution

The fourth proportional to 602.76, 833.15 and 438.13 is: 605.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.76 : 833.15 = 438.13 : x
  2. Step 2: Convert to fraction form
    602.76/833.15 = 438.13/x
  3. Step 3: Cross multiply
    602.76x = 833.15 × 438.13
  4. Step 4: Simplify right side
    602.76x = 365,025.82
  5. Step 5: Solve for x
    x = 365,025.82/602.76
  6. Step 6: Final answer
    x = 605.60

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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.