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Finding the Fourth Proportional to 691.93, 953.74 and 482.34

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Solution

The fourth proportional to 691.93, 953.74 and 482.34 is: 664.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.93 : 953.74 = 482.34 : x
  2. Step 2: Convert to fraction form
    691.93/953.74 = 482.34/x
  3. Step 3: Cross multiply
    691.93x = 953.74 × 482.34
  4. Step 4: Simplify right side
    691.93x = 460,026.95
  5. Step 5: Solve for x
    x = 460,026.95/691.93
  6. Step 6: Final answer
    x = 664.85

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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.