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Finding the Fourth Proportional to 675.46, 932.19 and 380.75

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Solution

The fourth proportional to 675.46, 932.19 and 380.75 is: 525.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.46 : 932.19 = 380.75 : x
  2. Step 2: Convert to fraction form
    675.46/932.19 = 380.75/x
  3. Step 3: Cross multiply
    675.46x = 932.19 × 380.75
  4. Step 4: Simplify right side
    675.46x = 354,931.34
  5. Step 5: Solve for x
    x = 354,931.34/675.46
  6. Step 6: Final answer
    x = 525.47

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Find fourth proportional to 337.73, 466.10 and 190.38
Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.