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Finding the Fourth Proportional to 531.32, 795.95 and 287.51

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Solution

The fourth proportional to 531.32, 795.95 and 287.51 is: 430.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.32 : 795.95 = 287.51 : x
  2. Step 2: Convert to fraction form
    531.32/795.95 = 287.51/x
  3. Step 3: Cross multiply
    531.32x = 795.95 × 287.51
  4. Step 4: Simplify right side
    531.32x = 228,838.17
  5. Step 5: Solve for x
    x = 228,838.17/531.32
  6. Step 6: Final answer
    x = 430.70

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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.