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Finding the Fourth Proportional to 1,070.37, 1,605.77 and 454.07

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Solution

The fourth proportional to 1,070.37, 1,605.77 and 454.07 is: 681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.37 : 1,605.77 = 454.07 : x
  2. Step 2: Convert to fraction form
    1,070.37/1,605.77 = 454.07/x
  3. Step 3: Cross multiply
    1,070.37x = 1,605.77 × 454.07
  4. Step 4: Simplify right side
    1,070.37x = 729,131.98
  5. Step 5: Solve for x
    x = 729,131.98/1,070.37
  6. Step 6: Final answer
    x = 681.20

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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.