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Finding the Fourth Proportional to 956.59, 1,319.30 and 624.76

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Solution

The fourth proportional to 956.59, 1,319.30 and 624.76 is: 861.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.59 : 1,319.30 = 624.76 : x
  2. Step 2: Convert to fraction form
    956.59/1,319.30 = 624.76/x
  3. Step 3: Cross multiply
    956.59x = 1,319.30 × 624.76
  4. Step 4: Simplify right side
    956.59x = 824,242.74
  5. Step 5: Solve for x
    x = 824,242.74/956.59
  6. Step 6: Final answer
    x = 861.65

Related Problems

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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.