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Finding the Fourth Proportional to 956.02, 1,320.08 and 779.00

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Solution

The fourth proportional to 956.02, 1,320.08 and 779.00 is: 1,075.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.02 : 1,320.08 = 779.00 : x
  2. Step 2: Convert to fraction form
    956.02/1,320.08 = 779.00/x
  3. Step 3: Cross multiply
    956.02x = 1,320.08 × 779.00
  4. Step 4: Simplify right side
    956.02x = 1,028,344.65
  5. Step 5: Solve for x
    x = 1,028,344.65/956.02
  6. Step 6: Final answer
    x = 1,075.66

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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.