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Finding the Fourth Proportional to 587.91, 885.91 and 487.45

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Solution

The fourth proportional to 587.91, 885.91 and 487.45 is: 734.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.91 : 885.91 = 487.45 : x
  2. Step 2: Convert to fraction form
    587.91/885.91 = 487.45/x
  3. Step 3: Cross multiply
    587.91x = 885.91 × 487.45
  4. Step 4: Simplify right side
    587.91x = 431,836.83
  5. Step 5: Solve for x
    x = 431,836.83/587.91
  6. Step 6: Final answer
    x = 734.53

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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.