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Finding the Fourth Proportional to 586.65, 808.54 and 439.03

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Solution

The fourth proportional to 586.65, 808.54 and 439.03 is: 605.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.65 : 808.54 = 439.03 : x
  2. Step 2: Convert to fraction form
    586.65/808.54 = 439.03/x
  3. Step 3: Cross multiply
    586.65x = 808.54 × 439.03
  4. Step 4: Simplify right side
    586.65x = 354,973.32
  5. Step 5: Solve for x
    x = 354,973.32/586.65
  6. Step 6: Final answer
    x = 605.09

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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.