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Finding the Fourth Proportional to 652.74, 978.02 and 469.86

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Solution

The fourth proportional to 652.74, 978.02 and 469.86 is: 704.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.74 : 978.02 = 469.86 : x
  2. Step 2: Convert to fraction form
    652.74/978.02 = 469.86/x
  3. Step 3: Cross multiply
    652.74x = 978.02 × 469.86
  4. Step 4: Simplify right side
    652.74x = 459,532.48
  5. Step 5: Solve for x
    x = 459,532.48/652.74
  6. Step 6: Final answer
    x = 704.01

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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.