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Finding the Fourth Proportional to 586.67, 808.65 and 553.86

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Solution

The fourth proportional to 586.67, 808.65 and 553.86 is: 763.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.67 : 808.65 = 553.86 : x
  2. Step 2: Convert to fraction form
    586.67/808.65 = 553.86/x
  3. Step 3: Cross multiply
    586.67x = 808.65 × 553.86
  4. Step 4: Simplify right side
    586.67x = 447,878.89
  5. Step 5: Solve for x
    x = 447,878.89/586.67
  6. Step 6: Final answer
    x = 763.43

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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.