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Finding the Fourth Proportional to 1,558.73, 2,335.25 and 907.49

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Solution

The fourth proportional to 1,558.73, 2,335.25 and 907.49 is: 1,359.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.73 : 2,335.25 = 907.49 : x
  2. Step 2: Convert to fraction form
    1,558.73/2,335.25 = 907.49/x
  3. Step 3: Cross multiply
    1,558.73x = 2,335.25 × 907.49
  4. Step 4: Simplify right side
    1,558.73x = 2,119,216.02
  5. Step 5: Solve for x
    x = 2,119,216.02/1,558.73
  6. Step 6: Final answer
    x = 1,359.58

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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.