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Finding the Fourth Proportional to 1,323.99, 1,985.58 and 502.45

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Solution

The fourth proportional to 1,323.99, 1,985.58 and 502.45 is: 753.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.99 : 1,985.58 = 502.45 : x
  2. Step 2: Convert to fraction form
    1,323.99/1,985.58 = 502.45/x
  3. Step 3: Cross multiply
    1,323.99x = 1,985.58 × 502.45
  4. Step 4: Simplify right side
    1,323.99x = 997,649.71
  5. Step 5: Solve for x
    x = 997,649.71/1,323.99
  6. Step 6: Final answer
    x = 753.52

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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.