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Finding the Fourth Proportional to 1,807.59, 2,711.80 and 653.34

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Solution

The fourth proportional to 1,807.59, 2,711.80 and 653.34 is: 980.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.59 : 2,711.80 = 653.34 : x
  2. Step 2: Convert to fraction form
    1,807.59/2,711.80 = 653.34/x
  3. Step 3: Cross multiply
    1,807.59x = 2,711.80 × 653.34
  4. Step 4: Simplify right side
    1,807.59x = 1,771,738.40
  5. Step 5: Solve for x
    x = 1,771,738.40/1,807.59
  6. Step 6: Final answer
    x = 980.16

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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.