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Finding the Fourth Proportional to 1,001.06, 1,381.50 and 581.48

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Solution

The fourth proportional to 1,001.06, 1,381.50 and 581.48 is: 802.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.06 : 1,381.50 = 581.48 : x
  2. Step 2: Convert to fraction form
    1,001.06/1,381.50 = 581.48/x
  3. Step 3: Cross multiply
    1,001.06x = 1,381.50 × 581.48
  4. Step 4: Simplify right side
    1,001.06x = 803,311.71
  5. Step 5: Solve for x
    x = 803,311.71/1,001.06
  6. Step 6: Final answer
    x = 802.46

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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.