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Finding the Fourth Proportional to 947.34, 1,307.25 and 527.67

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Solution

The fourth proportional to 947.34, 1,307.25 and 527.67 is: 728.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    947.34 : 1,307.25 = 527.67 : x
  2. Step 2: Convert to fraction form
    947.34/1,307.25 = 527.67/x
  3. Step 3: Cross multiply
    947.34x = 1,307.25 × 527.67
  4. Step 4: Simplify right side
    947.34x = 689,796.61
  5. Step 5: Solve for x
    x = 689,796.61/947.34
  6. Step 6: Final answer
    x = 728.14

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.