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Finding the Fourth Proportional to 914.76, 1,372.12 and 230.76

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Solution

The fourth proportional to 914.76, 1,372.12 and 230.76 is: 346.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.76 : 1,372.12 = 230.76 : x
  2. Step 2: Convert to fraction form
    914.76/1,372.12 = 230.76/x
  3. Step 3: Cross multiply
    914.76x = 1,372.12 × 230.76
  4. Step 4: Simplify right side
    914.76x = 316,630.41
  5. Step 5: Solve for x
    x = 316,630.41/914.76
  6. Step 6: Final answer
    x = 346.13

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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.