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Finding the Fourth Proportional to 655.69, 987.11 and 598.28

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Solution

The fourth proportional to 655.69, 987.11 and 598.28 is: 900.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.69 : 987.11 = 598.28 : x
  2. Step 2: Convert to fraction form
    655.69/987.11 = 598.28/x
  3. Step 3: Cross multiply
    655.69x = 987.11 × 598.28
  4. Step 4: Simplify right side
    655.69x = 590,568.17
  5. Step 5: Solve for x
    x = 590,568.17/655.69
  6. Step 6: Final answer
    x = 900.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.