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Finding the Fourth Proportional to 947.25, 1,307.25 and 593.39

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Solution

The fourth proportional to 947.25, 1,307.25 and 593.39 is: 818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    947.25 : 1,307.25 = 593.39 : x
  2. Step 2: Convert to fraction form
    947.25/1,307.25 = 593.39/x
  3. Step 3: Cross multiply
    947.25x = 1,307.25 × 593.39
  4. Step 4: Simplify right side
    947.25x = 775,702.54
  5. Step 5: Solve for x
    x = 775,702.54/947.25
  6. Step 6: Final answer
    x = 818.90

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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.