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Finding the Fourth Proportional to 528.14, 728.65 and 341.75

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Solution

The fourth proportional to 528.14, 728.65 and 341.75 is: 471.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.14 : 728.65 = 341.75 : x
  2. Step 2: Convert to fraction form
    528.14/728.65 = 341.75/x
  3. Step 3: Cross multiply
    528.14x = 728.65 × 341.75
  4. Step 4: Simplify right side
    528.14x = 249,016.14
  5. Step 5: Solve for x
    x = 249,016.14/528.14
  6. Step 6: Final answer
    x = 471.50

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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.