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Finding the Fourth Proportional to 581.48, 868.30 and 578.06

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Solution

The fourth proportional to 581.48, 868.30 and 578.06 is: 863.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.48 : 868.30 = 578.06 : x
  2. Step 2: Convert to fraction form
    581.48/868.30 = 578.06/x
  3. Step 3: Cross multiply
    581.48x = 868.30 × 578.06
  4. Step 4: Simplify right side
    581.48x = 501,926.61
  5. Step 5: Solve for x
    x = 501,926.61/581.48
  6. Step 6: Final answer
    x = 863.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.