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Finding the Fourth Proportional to 590.49, 885.75 and 487.59

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Solution

The fourth proportional to 590.49, 885.75 and 487.59 is: 731.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.49 : 885.75 = 487.59 : x
  2. Step 2: Convert to fraction form
    590.49/885.75 = 487.59/x
  3. Step 3: Cross multiply
    590.49x = 885.75 × 487.59
  4. Step 4: Simplify right side
    590.49x = 431,882.84
  5. Step 5: Solve for x
    x = 431,882.84/590.49
  6. Step 6: Final answer
    x = 731.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.