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Finding the Fourth Proportional to 406.60, 607.13 and 383.56

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Solution

The fourth proportional to 406.60, 607.13 and 383.56 is: 572.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.60 : 607.13 = 383.56 : x
  2. Step 2: Convert to fraction form
    406.60/607.13 = 383.56/x
  3. Step 3: Cross multiply
    406.60x = 607.13 × 383.56
  4. Step 4: Simplify right side
    406.60x = 232,870.78
  5. Step 5: Solve for x
    x = 232,870.78/406.60
  6. Step 6: Final answer
    x = 572.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.