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Finding the Fourth Proportional to 531.20, 797.76 and 348.96

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Solution

The fourth proportional to 531.20, 797.76 and 348.96 is: 524.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.20 : 797.76 = 348.96 : x
  2. Step 2: Convert to fraction form
    531.20/797.76 = 348.96/x
  3. Step 3: Cross multiply
    531.20x = 797.76 × 348.96
  4. Step 4: Simplify right side
    531.20x = 278,386.33
  5. Step 5: Solve for x
    x = 278,386.33/531.20
  6. Step 6: Final answer
    x = 524.07

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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.