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Finding the Fourth Proportional to 535.31, 738.51 and 325.40

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Solution

The fourth proportional to 535.31, 738.51 and 325.40 is: 448.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.31 : 738.51 = 325.40 : x
  2. Step 2: Convert to fraction form
    535.31/738.51 = 325.40/x
  3. Step 3: Cross multiply
    535.31x = 738.51 × 325.40
  4. Step 4: Simplify right side
    535.31x = 240,307.46
  5. Step 5: Solve for x
    x = 240,307.46/535.31
  6. Step 6: Final answer
    x = 448.92

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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.