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Finding the Fourth Proportional to 527.07, 727.55 and 317.26

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Solution

The fourth proportional to 527.07, 727.55 and 317.26 is: 437.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.07 : 727.55 = 317.26 : x
  2. Step 2: Convert to fraction form
    527.07/727.55 = 317.26/x
  3. Step 3: Cross multiply
    527.07x = 727.55 × 317.26
  4. Step 4: Simplify right side
    527.07x = 230,821.49
  5. Step 5: Solve for x
    x = 230,821.49/527.07
  6. Step 6: Final answer
    x = 437.93

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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.