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Finding the Fourth Proportional to 531.75, 797.76 and 312.56

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Solution

The fourth proportional to 531.75, 797.76 and 312.56 is: 468.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.75 : 797.76 = 312.56 : x
  2. Step 2: Convert to fraction form
    531.75/797.76 = 312.56/x
  3. Step 3: Cross multiply
    531.75x = 797.76 × 312.56
  4. Step 4: Simplify right side
    531.75x = 249,347.47
  5. Step 5: Solve for x
    x = 249,347.47/531.75
  6. Step 6: Final answer
    x = 468.92

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