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Finding the Fourth Proportional to 691.70, 955.01 and 526.76

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Solution

The fourth proportional to 691.70, 955.01 and 526.76 is: 727.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.70 : 955.01 = 526.76 : x
  2. Step 2: Convert to fraction form
    691.70/955.01 = 526.76/x
  3. Step 3: Cross multiply
    691.70x = 955.01 × 526.76
  4. Step 4: Simplify right side
    691.70x = 503,053.66
  5. Step 5: Solve for x
    x = 503,053.66/691.70
  6. Step 6: Final answer
    x = 727.28

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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.