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Finding the Fourth Proportional to 644.34, 888.51 and 593.70

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Solution

The fourth proportional to 644.34, 888.51 and 593.70 is: 818.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.34 : 888.51 = 593.70 : x
  2. Step 2: Convert to fraction form
    644.34/888.51 = 593.70/x
  3. Step 3: Cross multiply
    644.34x = 888.51 × 593.70
  4. Step 4: Simplify right side
    644.34x = 527,508.39
  5. Step 5: Solve for x
    x = 527,508.39/644.34
  6. Step 6: Final answer
    x = 818.68

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Half scale
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Double scale
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Similar ratio
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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.