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Finding the Fourth Proportional to 955.98, 1,423.52 and 900.06

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Solution

The fourth proportional to 955.98, 1,423.52 and 900.06 is: 1,340.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.98 : 1,423.52 = 900.06 : x
  2. Step 2: Convert to fraction form
    955.98/1,423.52 = 900.06/x
  3. Step 3: Cross multiply
    955.98x = 1,423.52 × 900.06
  4. Step 4: Simplify right side
    955.98x = 1,281,248.91
  5. Step 5: Solve for x
    x = 1,281,248.91/955.98
  6. Step 6: Final answer
    x = 1,340.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.