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Finding the Fourth Proportional to 995.42, 1,492.15 and 474.50

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Solution

The fourth proportional to 995.42, 1,492.15 and 474.50 is: 711.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.42 : 1,492.15 = 474.50 : x
  2. Step 2: Convert to fraction form
    995.42/1,492.15 = 474.50/x
  3. Step 3: Cross multiply
    995.42x = 1,492.15 × 474.50
  4. Step 4: Simplify right side
    995.42x = 708,025.18
  5. Step 5: Solve for x
    x = 708,025.18/995.42
  6. Step 6: Final answer
    x = 711.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.