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Finding the Fourth Proportional to 661.92, 987.60 and 592.32

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Solution

The fourth proportional to 661.92, 987.60 and 592.32 is: 883.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.92 : 987.60 = 592.32 : x
  2. Step 2: Convert to fraction form
    661.92/987.60 = 592.32/x
  3. Step 3: Cross multiply
    661.92x = 987.60 × 592.32
  4. Step 4: Simplify right side
    661.92x = 584,975.23
  5. Step 5: Solve for x
    x = 584,975.23/661.92
  6. Step 6: Final answer
    x = 883.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.