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Finding the Fourth Proportional to 591.42, 886.98 and 386.10

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Solution

The fourth proportional to 591.42, 886.98 and 386.10 is: 579.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.42 : 886.98 = 386.10 : x
  2. Step 2: Convert to fraction form
    591.42/886.98 = 386.10/x
  3. Step 3: Cross multiply
    591.42x = 886.98 × 386.10
  4. Step 4: Simplify right side
    591.42x = 342,462.98
  5. Step 5: Solve for x
    x = 342,462.98/591.42
  6. Step 6: Final answer
    x = 579.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.