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Finding the Fourth Proportional to 528.88, 793 and 312.24

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Solution

The fourth proportional to 528.88, 793 and 312.24 is: 468.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.88 : 793 = 312.24 : x
  2. Step 2: Convert to fraction form
    528.88/793 = 312.24/x
  3. Step 3: Cross multiply
    528.88x = 793 × 312.24
  4. Step 4: Simplify right side
    528.88x = 247,606.32
  5. Step 5: Solve for x
    x = 247,606.32/528.88
  6. Step 6: Final answer
    x = 468.17

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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.