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Finding the Fourth Proportional to 1,053.84, 1,454.21 and 655.47

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Solution

The fourth proportional to 1,053.84, 1,454.21 and 655.47 is: 904.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.84 : 1,454.21 = 655.47 : x
  2. Step 2: Convert to fraction form
    1,053.84/1,454.21 = 655.47/x
  3. Step 3: Cross multiply
    1,053.84x = 1,454.21 × 655.47
  4. Step 4: Simplify right side
    1,053.84x = 953,187.75
  5. Step 5: Solve for x
    x = 953,187.75/1,053.84
  6. Step 6: Final answer
    x = 904.49

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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.