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Finding the Fourth Proportional to 1,658.78, 2,487.60 and 562.89

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Solution

The fourth proportional to 1,658.78, 2,487.60 and 562.89 is: 844.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.78 : 2,487.60 = 562.89 : x
  2. Step 2: Convert to fraction form
    1,658.78/2,487.60 = 562.89/x
  3. Step 3: Cross multiply
    1,658.78x = 2,487.60 × 562.89
  4. Step 4: Simplify right side
    1,658.78x = 1,400,236.21
  5. Step 5: Solve for x
    x = 1,400,236.21/1,658.78
  6. Step 6: Final answer
    x = 844.14

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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.