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Finding the Fourth Proportional to 795.76, 1,194.14 and 430.79

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Solution

The fourth proportional to 795.76, 1,194.14 and 430.79 is: 646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.76 : 1,194.14 = 430.79 : x
  2. Step 2: Convert to fraction form
    795.76/1,194.14 = 430.79/x
  3. Step 3: Cross multiply
    795.76x = 1,194.14 × 430.79
  4. Step 4: Simplify right side
    795.76x = 514,418.68
  5. Step 5: Solve for x
    x = 514,418.68/795.76
  6. Step 6: Final answer
    x = 646.45

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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.