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Finding the Fourth Proportional to 917.38, 1,376.19 and 332.29

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Solution

The fourth proportional to 917.38, 1,376.19 and 332.29 is: 498.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    917.38 : 1,376.19 = 332.29 : x
  2. Step 2: Convert to fraction form
    917.38/1,376.19 = 332.29/x
  3. Step 3: Cross multiply
    917.38x = 1,376.19 × 332.29
  4. Step 4: Simplify right side
    917.38x = 457,294.18
  5. Step 5: Solve for x
    x = 457,294.18/917.38
  6. Step 6: Final answer
    x = 498.48

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Double scale
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1.5x scale

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.