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Finding the Fourth Proportional to 619.29, 924.86 and 551.25

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Solution

The fourth proportional to 619.29, 924.86 and 551.25 is: 823.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.29 : 924.86 = 551.25 : x
  2. Step 2: Convert to fraction form
    619.29/924.86 = 551.25/x
  3. Step 3: Cross multiply
    619.29x = 924.86 × 551.25
  4. Step 4: Simplify right side
    619.29x = 509,826.32
  5. Step 5: Solve for x
    x = 509,826.32/619.29
  6. Step 6: Final answer
    x = 823.24

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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.