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Finding the Fourth Proportional to 995.45, 1,372.95 and 602.06

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Solution

The fourth proportional to 995.45, 1,372.95 and 602.06 is: 830.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.45 : 1,372.95 = 602.06 : x
  2. Step 2: Convert to fraction form
    995.45/1,372.95 = 602.06/x
  3. Step 3: Cross multiply
    995.45x = 1,372.95 × 602.06
  4. Step 4: Simplify right side
    995.45x = 826,598.28
  5. Step 5: Solve for x
    x = 826,598.28/995.45
  6. Step 6: Final answer
    x = 830.38

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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.