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Finding the Fourth Proportional to 691.61, 953.21 and 602.53

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Solution

The fourth proportional to 691.61, 953.21 and 602.53 is: 830.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.61 : 953.21 = 602.53 : x
  2. Step 2: Convert to fraction form
    691.61/953.21 = 602.53/x
  3. Step 3: Cross multiply
    691.61x = 953.21 × 602.53
  4. Step 4: Simplify right side
    691.61x = 574,333.36
  5. Step 5: Solve for x
    x = 574,333.36/691.61
  6. Step 6: Final answer
    x = 830.44

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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.