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Finding the Fourth Proportional to 1,049.01, 1,573.50 and 618.90

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Solution

The fourth proportional to 1,049.01, 1,573.50 and 618.90 is: 928.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.01 : 1,573.50 = 618.90 : x
  2. Step 2: Convert to fraction form
    1,049.01/1,573.50 = 618.90/x
  3. Step 3: Cross multiply
    1,049.01x = 1,573.50 × 618.90
  4. Step 4: Simplify right side
    1,049.01x = 973,839.15
  5. Step 5: Solve for x
    x = 973,839.15/1,049.01
  6. Step 6: Final answer
    x = 928.34

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1.5x scale

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.