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Finding the Fourth Proportional to 607.44, 910.92 and 392.40

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Solution

The fourth proportional to 607.44, 910.92 and 392.40 is: 588.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.44 : 910.92 = 392.40 : x
  2. Step 2: Convert to fraction form
    607.44/910.92 = 392.40/x
  3. Step 3: Cross multiply
    607.44x = 910.92 × 392.40
  4. Step 4: Simplify right side
    607.44x = 357,445.01
  5. Step 5: Solve for x
    x = 357,445.01/607.44
  6. Step 6: Final answer
    x = 588.44

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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.