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Finding the Fourth Proportional to 978.48, 1,467.68 and 592.92

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Solution

The fourth proportional to 978.48, 1,467.68 and 592.92 is: 889.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    978.48 : 1,467.68 = 592.92 : x
  2. Step 2: Convert to fraction form
    978.48/1,467.68 = 592.92/x
  3. Step 3: Cross multiply
    978.48x = 1,467.68 × 592.92
  4. Step 4: Simplify right side
    978.48x = 870,213.86
  5. Step 5: Solve for x
    x = 870,213.86/978.48
  6. Step 6: Final answer
    x = 889.35

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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.