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Finding the Fourth Proportional to 630.34, 945.12 and 283.61

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Solution

The fourth proportional to 630.34, 945.12 and 283.61 is: 425.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.34 : 945.12 = 283.61 : x
  2. Step 2: Convert to fraction form
    630.34/945.12 = 283.61/x
  3. Step 3: Cross multiply
    630.34x = 945.12 × 283.61
  4. Step 4: Simplify right side
    630.34x = 268,048.91
  5. Step 5: Solve for x
    x = 268,048.91/630.34
  6. Step 6: Final answer
    x = 425.25

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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.