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Finding the Fourth Proportional to 1,528.68, 2,291.71 and 650.38

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Solution

The fourth proportional to 1,528.68, 2,291.71 and 650.38 is: 975.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.68 : 2,291.71 = 650.38 : x
  2. Step 2: Convert to fraction form
    1,528.68/2,291.71 = 650.38/x
  3. Step 3: Cross multiply
    1,528.68x = 2,291.71 × 650.38
  4. Step 4: Simplify right side
    1,528.68x = 1,490,483.59
  5. Step 5: Solve for x
    x = 1,490,483.59/1,528.68
  6. Step 6: Final answer
    x = 975.01

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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.