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Finding the Fourth Proportional to 1,075.47, 1,484.30 and 609.75

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Solution

The fourth proportional to 1,075.47, 1,484.30 and 609.75 is: 841.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.47 : 1,484.30 = 609.75 : x
  2. Step 2: Convert to fraction form
    1,075.47/1,484.30 = 609.75/x
  3. Step 3: Cross multiply
    1,075.47x = 1,484.30 × 609.75
  4. Step 4: Simplify right side
    1,075.47x = 905,048.88
  5. Step 5: Solve for x
    x = 905,048.88/1,075.47
  6. Step 6: Final answer
    x = 841.54

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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.