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Finding the Fourth Proportional to 1,326.14, 1,830.14 and 766.70

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Solution

The fourth proportional to 1,326.14, 1,830.14 and 766.70 is: 1,058.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.14 : 1,830.14 = 766.70 : x
  2. Step 2: Convert to fraction form
    1,326.14/1,830.14 = 766.70/x
  3. Step 3: Cross multiply
    1,326.14x = 1,830.14 × 766.70
  4. Step 4: Simplify right side
    1,326.14x = 1,403,168.34
  5. Step 5: Solve for x
    x = 1,403,168.34/1,326.14
  6. Step 6: Final answer
    x = 1,058.08

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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.