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Finding the Fourth Proportional to 655.13, 903.74 and 434.13

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Solution

The fourth proportional to 655.13, 903.74 and 434.13 is: 598.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.13 : 903.74 = 434.13 : x
  2. Step 2: Convert to fraction form
    655.13/903.74 = 434.13/x
  3. Step 3: Cross multiply
    655.13x = 903.74 × 434.13
  4. Step 4: Simplify right side
    655.13x = 392,338.48
  5. Step 5: Solve for x
    x = 392,338.48/655.13
  6. Step 6: Final answer
    x = 598.88

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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.