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Finding the Fourth Proportional to 651.68, 977.52 and 395.12

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Solution

The fourth proportional to 651.68, 977.52 and 395.12 is: 592.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.68 : 977.52 = 395.12 : x
  2. Step 2: Convert to fraction form
    651.68/977.52 = 395.12/x
  3. Step 3: Cross multiply
    651.68x = 977.52 × 395.12
  4. Step 4: Simplify right side
    651.68x = 386,237.70
  5. Step 5: Solve for x
    x = 386,237.70/651.68
  6. Step 6: Final answer
    x = 592.68

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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.