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Finding the Fourth Proportional to 795.47, 1,193.74 and 430.29

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Solution

The fourth proportional to 795.47, 1,193.74 and 430.29 is: 645.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.47 : 1,193.74 = 430.29 : x
  2. Step 2: Convert to fraction form
    795.47/1,193.74 = 430.29/x
  3. Step 3: Cross multiply
    795.47x = 1,193.74 × 430.29
  4. Step 4: Simplify right side
    795.47x = 513,653.31
  5. Step 5: Solve for x
    x = 513,653.31/795.47
  6. Step 6: Final answer
    x = 645.73

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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.