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Finding the Fourth Proportional to 1,458.98, 2,013.32 and 829.49

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Solution

The fourth proportional to 1,458.98, 2,013.32 and 829.49 is: 1,144.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.98 : 2,013.32 = 829.49 : x
  2. Step 2: Convert to fraction form
    1,458.98/2,013.32 = 829.49/x
  3. Step 3: Cross multiply
    1,458.98x = 2,013.32 × 829.49
  4. Step 4: Simplify right side
    1,458.98x = 1,670,032.14
  5. Step 5: Solve for x
    x = 1,670,032.14/1,458.98
  6. Step 6: Final answer
    x = 1,144.66

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1.5x scale

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.