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Finding the Fourth Proportional to 1,293.71, 1,941.01 and 807.11

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Solution

The fourth proportional to 1,293.71, 1,941.01 and 807.11 is: 1,210.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.71 : 1,941.01 = 807.11 : x
  2. Step 2: Convert to fraction form
    1,293.71/1,941.01 = 807.11/x
  3. Step 3: Cross multiply
    1,293.71x = 1,941.01 × 807.11
  4. Step 4: Simplify right side
    1,293.71x = 1,566,596.86
  5. Step 5: Solve for x
    x = 1,566,596.86/1,293.71
  6. Step 6: Final answer
    x = 1,210.93

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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.