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Finding the Fourth Proportional to 995.49, 1,485.64 and 886.14

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Solution

The fourth proportional to 995.49, 1,485.64 and 886.14 is: 1,322.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.49 : 1,485.64 = 886.14 : x
  2. Step 2: Convert to fraction form
    995.49/1,485.64 = 886.14/x
  3. Step 3: Cross multiply
    995.49x = 1,485.64 × 886.14
  4. Step 4: Simplify right side
    995.49x = 1,316,486.14
  5. Step 5: Solve for x
    x = 1,316,486.14/995.49
  6. Step 6: Final answer
    x = 1,322.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.