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Finding the Fourth Proportional to 1,528.05, 2,292.38 and 650.55

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Solution

The fourth proportional to 1,528.05, 2,292.38 and 650.55 is: 975.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.05 : 2,292.38 = 650.55 : x
  2. Step 2: Convert to fraction form
    1,528.05/2,292.38 = 650.55/x
  3. Step 3: Cross multiply
    1,528.05x = 2,292.38 × 650.55
  4. Step 4: Simplify right side
    1,528.05x = 1,491,307.81
  5. Step 5: Solve for x
    x = 1,491,307.81/1,528.05
  6. Step 6: Final answer
    x = 975.95

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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.