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Finding the Fourth Proportional to 1,544.76, 2,315.40 and 722.34

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Solution

The fourth proportional to 1,544.76, 2,315.40 and 722.34 is: 1,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,544.76 : 2,315.40 = 722.34 : x
  2. Step 2: Convert to fraction form
    1,544.76/2,315.40 = 722.34/x
  3. Step 3: Cross multiply
    1,544.76x = 2,315.40 × 722.34
  4. Step 4: Simplify right side
    1,544.76x = 1,672,506.04
  5. Step 5: Solve for x
    x = 1,672,506.04/1,544.76
  6. Step 6: Final answer
    x = 1,082.70

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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.