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Finding the Fourth Proportional to 1,070.75, 1,477.76 and 605.03

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Solution

The fourth proportional to 1,070.75, 1,477.76 and 605.03 is: 835.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.75 : 1,477.76 = 605.03 : x
  2. Step 2: Convert to fraction form
    1,070.75/1,477.76 = 605.03/x
  3. Step 3: Cross multiply
    1,070.75x = 1,477.76 × 605.03
  4. Step 4: Simplify right side
    1,070.75x = 894,086.11
  5. Step 5: Solve for x
    x = 894,086.11/1,070.75
  6. Step 6: Final answer
    x = 835.01

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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.