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Finding the Fourth Proportional to 586.48, 807.84 and 493.12

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Solution

The fourth proportional to 586.48, 807.84 and 493.12 is: 679.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.48 : 807.84 = 493.12 : x
  2. Step 2: Convert to fraction form
    586.48/807.84 = 493.12/x
  3. Step 3: Cross multiply
    586.48x = 807.84 × 493.12
  4. Step 4: Simplify right side
    586.48x = 398,362.06
  5. Step 5: Solve for x
    x = 398,362.06/586.48
  6. Step 6: Final answer
    x = 679.24

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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.