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Finding the Fourth Proportional to 929.52, 1,282.26 and 619.08

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Solution

The fourth proportional to 929.52, 1,282.26 and 619.08 is: 854.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.52 : 1,282.26 = 619.08 : x
  2. Step 2: Convert to fraction form
    929.52/1,282.26 = 619.08/x
  3. Step 3: Cross multiply
    929.52x = 1,282.26 × 619.08
  4. Step 4: Simplify right side
    929.52x = 793,821.52
  5. Step 5: Solve for x
    x = 793,821.52/929.52
  6. Step 6: Final answer
    x = 854.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.