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Finding the Fourth Proportional to 616.72, 924.76 and 578.48

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Solution

The fourth proportional to 616.72, 924.76 and 578.48 is: 867.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.72 : 924.76 = 578.48 : x
  2. Step 2: Convert to fraction form
    616.72/924.76 = 578.48/x
  3. Step 3: Cross multiply
    616.72x = 924.76 × 578.48
  4. Step 4: Simplify right side
    616.72x = 534,955.16
  5. Step 5: Solve for x
    x = 534,955.16/616.72
  6. Step 6: Final answer
    x = 867.42

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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.