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Finding the Fourth Proportional to 581.01, 870.39 and 551.49

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Solution

The fourth proportional to 581.01, 870.39 and 551.49 is: 826.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.01 : 870.39 = 551.49 : x
  2. Step 2: Convert to fraction form
    581.01/870.39 = 551.49/x
  3. Step 3: Cross multiply
    581.01x = 870.39 × 551.49
  4. Step 4: Simplify right side
    581.01x = 480,011.38
  5. Step 5: Solve for x
    x = 480,011.38/581.01
  6. Step 6: Final answer
    x = 826.17

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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.