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Finding the Fourth Proportional to 737.40, 1,017.45 and 619.83

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Solution

The fourth proportional to 737.40, 1,017.45 and 619.83 is: 855.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.40 : 1,017.45 = 619.83 : x
  2. Step 2: Convert to fraction form
    737.40/1,017.45 = 619.83/x
  3. Step 3: Cross multiply
    737.40x = 1,017.45 × 619.83
  4. Step 4: Simplify right side
    737.40x = 630,646.03
  5. Step 5: Solve for x
    x = 630,646.03/737.40
  6. Step 6: Final answer
    x = 855.23

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1.5x scale

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.