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Finding the Fourth Proportional to 1,060.70, 1,463.68 and 618.64

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Solution

The fourth proportional to 1,060.70, 1,463.68 and 618.64 is: 853.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.70 : 1,463.68 = 618.64 : x
  2. Step 2: Convert to fraction form
    1,060.70/1,463.68 = 618.64/x
  3. Step 3: Cross multiply
    1,060.70x = 1,463.68 × 618.64
  4. Step 4: Simplify right side
    1,060.70x = 905,491.00
  5. Step 5: Solve for x
    x = 905,491.00/1,060.70
  6. Step 6: Final answer
    x = 853.67

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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.