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Finding the Fourth Proportional to 924.94, 1,387.50 and 275.56

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Solution

The fourth proportional to 924.94, 1,387.50 and 275.56 is: 413.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.94 : 1,387.50 = 275.56 : x
  2. Step 2: Convert to fraction form
    924.94/1,387.50 = 275.56/x
  3. Step 3: Cross multiply
    924.94x = 1,387.50 × 275.56
  4. Step 4: Simplify right side
    924.94x = 382,339.50
  5. Step 5: Solve for x
    x = 382,339.50/924.94
  6. Step 6: Final answer
    x = 413.37

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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.