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Finding the Fourth Proportional to 945.87, 1,305.52 and 526.38

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Solution

The fourth proportional to 945.87, 1,305.52 and 526.38 is: 726.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.87 : 1,305.52 = 526.38 : x
  2. Step 2: Convert to fraction form
    945.87/1,305.52 = 526.38/x
  3. Step 3: Cross multiply
    945.87x = 1,305.52 × 526.38
  4. Step 4: Simplify right side
    945.87x = 687,191.77
  5. Step 5: Solve for x
    x = 687,191.77/945.87
  6. Step 6: Final answer
    x = 726.52

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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.