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Finding the Fourth Proportional to 1,053.04, 1,450.20 and 955.12

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Solution

The fourth proportional to 1,053.04, 1,450.20 and 955.12 is: 1,315.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.04 : 1,450.20 = 955.12 : x
  2. Step 2: Convert to fraction form
    1,053.04/1,450.20 = 955.12/x
  3. Step 3: Cross multiply
    1,053.04x = 1,450.20 × 955.12
  4. Step 4: Simplify right side
    1,053.04x = 1,385,115.02
  5. Step 5: Solve for x
    x = 1,385,115.02/1,053.04
  6. Step 6: Final answer
    x = 1,315.35

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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.