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Finding the Fourth Proportional to 1,075.95, 1,484.79 and 610.20

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Solution

The fourth proportional to 1,075.95, 1,484.79 and 610.20 is: 842.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.95 : 1,484.79 = 610.20 : x
  2. Step 2: Convert to fraction form
    1,075.95/1,484.79 = 610.20/x
  3. Step 3: Cross multiply
    1,075.95x = 1,484.79 × 610.20
  4. Step 4: Simplify right side
    1,075.95x = 906,018.86
  5. Step 5: Solve for x
    x = 906,018.86/1,075.95
  6. Step 6: Final answer
    x = 842.06

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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.