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Finding the Fourth Proportional to 691.14, 953.61 and 467.49

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Solution

The fourth proportional to 691.14, 953.61 and 467.49 is: 645.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.14 : 953.61 = 467.49 : x
  2. Step 2: Convert to fraction form
    691.14/953.61 = 467.49/x
  3. Step 3: Cross multiply
    691.14x = 953.61 × 467.49
  4. Step 4: Simplify right side
    691.14x = 445,803.14
  5. Step 5: Solve for x
    x = 445,803.14/691.14
  6. Step 6: Final answer
    x = 645.03

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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.