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Finding the Fourth Proportional to 586.02, 877.91 and 439.02

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Solution

The fourth proportional to 586.02, 877.91 and 439.02 is: 657.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.02 : 877.91 = 439.02 : x
  2. Step 2: Convert to fraction form
    586.02/877.91 = 439.02/x
  3. Step 3: Cross multiply
    586.02x = 877.91 × 439.02
  4. Step 4: Simplify right side
    586.02x = 385,421.56
  5. Step 5: Solve for x
    x = 385,421.56/586.02
  6. Step 6: Final answer
    x = 657.69

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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.