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Finding the Fourth Proportional to 597.20, 895.80 and 392.40

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Solution

The fourth proportional to 597.20, 895.80 and 392.40 is: 588.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    597.20 : 895.80 = 392.40 : x
  2. Step 2: Convert to fraction form
    597.20/895.80 = 392.40/x
  3. Step 3: Cross multiply
    597.20x = 895.80 × 392.40
  4. Step 4: Simplify right side
    597.20x = 351,511.92
  5. Step 5: Solve for x
    x = 351,511.92/597.20
  6. Step 6: Final answer
    x = 588.60

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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.