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Finding the Fourth Proportional to 1,161.54, 1,602.87 and 637.53

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Solution

The fourth proportional to 1,161.54, 1,602.87 and 637.53 is: 879.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.54 : 1,602.87 = 637.53 : x
  2. Step 2: Convert to fraction form
    1,161.54/1,602.87 = 637.53/x
  3. Step 3: Cross multiply
    1,161.54x = 1,602.87 × 637.53
  4. Step 4: Simplify right side
    1,161.54x = 1,021,877.71
  5. Step 5: Solve for x
    x = 1,021,877.71/1,161.54
  6. Step 6: Final answer
    x = 879.76

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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.