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Finding the Fourth Proportional to 1,070.10, 1,602.11 and 948.60

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Solution

The fourth proportional to 1,070.10, 1,602.11 and 948.60 is: 1,420.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.10 : 1,602.11 = 948.60 : x
  2. Step 2: Convert to fraction form
    1,070.10/1,602.11 = 948.60/x
  3. Step 3: Cross multiply
    1,070.10x = 1,602.11 × 948.60
  4. Step 4: Simplify right side
    1,070.10x = 1,519,763.92
  5. Step 5: Solve for x
    x = 1,519,763.92/1,070.10
  6. Step 6: Final answer
    x = 1,420.21

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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.