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Finding the Fourth Proportional to 1,246.61, 1,869.75 and 322.23

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Solution

The fourth proportional to 1,246.61, 1,869.75 and 322.23 is: 483.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.61 : 1,869.75 = 322.23 : x
  2. Step 2: Convert to fraction form
    1,246.61/1,869.75 = 322.23/x
  3. Step 3: Cross multiply
    1,246.61x = 1,869.75 × 322.23
  4. Step 4: Simplify right side
    1,246.61x = 602,483.74
  5. Step 5: Solve for x
    x = 602,483.74/1,246.61
  6. Step 6: Final answer
    x = 483.30

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1.5x scale

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.