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Finding the Fourth Proportional to 691.79, 953.75 and 573.32

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Solution

The fourth proportional to 691.79, 953.75 and 573.32 is: 790.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.79 : 953.75 = 573.32 : x
  2. Step 2: Convert to fraction form
    691.79/953.75 = 573.32/x
  3. Step 3: Cross multiply
    691.79x = 953.75 × 573.32
  4. Step 4: Simplify right side
    691.79x = 546,796.31
  5. Step 5: Solve for x
    x = 546,796.31/691.79
  6. Step 6: Final answer
    x = 790.41

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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.