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Finding the Fourth Proportional to 619.25, 924.35 and 576.45

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Solution

The fourth proportional to 619.25, 924.35 and 576.45 is: 860.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.25 : 924.35 = 576.45 : x
  2. Step 2: Convert to fraction form
    619.25/924.35 = 576.45/x
  3. Step 3: Cross multiply
    619.25x = 924.35 × 576.45
  4. Step 4: Simplify right side
    619.25x = 532,838.68
  5. Step 5: Solve for x
    x = 532,838.68/619.25
  6. Step 6: Final answer
    x = 860.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.