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Finding the Fourth Proportional to 801.51, 1,106.24 and 502.80

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Solution

The fourth proportional to 801.51, 1,106.24 and 502.80 is: 693.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.51 : 1,106.24 = 502.80 : x
  2. Step 2: Convert to fraction form
    801.51/1,106.24 = 502.80/x
  3. Step 3: Cross multiply
    801.51x = 1,106.24 × 502.80
  4. Step 4: Simplify right side
    801.51x = 556,214.96
  5. Step 5: Solve for x
    x = 556,214.96/801.51
  6. Step 6: Final answer
    x = 693.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.