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Finding the Fourth Proportional to 591.12, 886.08 and 405.84

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Solution

The fourth proportional to 591.12, 886.08 and 405.84 is: 608.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.12 : 886.08 = 405.84 : x
  2. Step 2: Convert to fraction form
    591.12/886.08 = 405.84/x
  3. Step 3: Cross multiply
    591.12x = 886.08 × 405.84
  4. Step 4: Simplify right side
    591.12x = 359,606.71
  5. Step 5: Solve for x
    x = 359,606.71/591.12
  6. Step 6: Final answer
    x = 608.35

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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.