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Finding the Fourth Proportional to 1,652.11, 2,476.81 and 611.45

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Solution

The fourth proportional to 1,652.11, 2,476.81 and 611.45 is: 916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,652.11 : 2,476.81 = 611.45 : x
  2. Step 2: Convert to fraction form
    1,652.11/2,476.81 = 611.45/x
  3. Step 3: Cross multiply
    1,652.11x = 2,476.81 × 611.45
  4. Step 4: Simplify right side
    1,652.11x = 1,514,445.47
  5. Step 5: Solve for x
    x = 1,514,445.47/1,652.11
  6. Step 6: Final answer
    x = 916.67

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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.