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Finding the Fourth Proportional to 1,075.21, 1,612.04 and 554.99

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Solution

The fourth proportional to 1,075.21, 1,612.04 and 554.99 is: 832.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.21 : 1,612.04 = 554.99 : x
  2. Step 2: Convert to fraction form
    1,075.21/1,612.04 = 554.99/x
  3. Step 3: Cross multiply
    1,075.21x = 1,612.04 × 554.99
  4. Step 4: Simplify right side
    1,075.21x = 894,655.24
  5. Step 5: Solve for x
    x = 894,655.24/1,075.21
  6. Step 6: Final answer
    x = 832.08

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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.