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Finding the Fourth Proportional to 1,083.76, 1,495.80 and 710.08

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Solution

The fourth proportional to 1,083.76, 1,495.80 and 710.08 is: 980.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.76 : 1,495.80 = 710.08 : x
  2. Step 2: Convert to fraction form
    1,083.76/1,495.80 = 710.08/x
  3. Step 3: Cross multiply
    1,083.76x = 1,495.80 × 710.08
  4. Step 4: Simplify right side
    1,083.76x = 1,062,137.66
  5. Step 5: Solve for x
    x = 1,062,137.66/1,083.76
  6. Step 6: Final answer
    x = 980.05

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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.