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Finding the Fourth Proportional to 531.65, 733.74 and 298.77

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Solution

The fourth proportional to 531.65, 733.74 and 298.77 is: 412.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.65 : 733.74 = 298.77 : x
  2. Step 2: Convert to fraction form
    531.65/733.74 = 298.77/x
  3. Step 3: Cross multiply
    531.65x = 733.74 × 298.77
  4. Step 4: Simplify right side
    531.65x = 219,218.01
  5. Step 5: Solve for x
    x = 219,218.01/531.65
  6. Step 6: Final answer
    x = 412.34

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1.5x scale

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.