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Finding the Fourth Proportional to 619.70, 924.48 and 575.51

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Solution

The fourth proportional to 619.70, 924.48 and 575.51 is: 858.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.70 : 924.48 = 575.51 : x
  2. Step 2: Convert to fraction form
    619.70/924.48 = 575.51/x
  3. Step 3: Cross multiply
    619.70x = 924.48 × 575.51
  4. Step 4: Simplify right side
    619.70x = 532,042.86
  5. Step 5: Solve for x
    x = 532,042.86/619.70
  6. Step 6: Final answer
    x = 858.56

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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.