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Finding the Fourth Proportional to 1,204.59, 1,662.08 and 707.05

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Solution

The fourth proportional to 1,204.59, 1,662.08 and 707.05 is: 975.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.59 : 1,662.08 = 707.05 : x
  2. Step 2: Convert to fraction form
    1,204.59/1,662.08 = 707.05/x
  3. Step 3: Cross multiply
    1,204.59x = 1,662.08 × 707.05
  4. Step 4: Simplify right side
    1,204.59x = 1,175,173.66
  5. Step 5: Solve for x
    x = 1,175,173.66/1,204.59
  6. Step 6: Final answer
    x = 975.58

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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.