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Finding the Fourth Proportional to 1,043.99, 1,440.70 and 578.24

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Solution

The fourth proportional to 1,043.99, 1,440.70 and 578.24 is: 797.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.99 : 1,440.70 = 578.24 : x
  2. Step 2: Convert to fraction form
    1,043.99/1,440.70 = 578.24/x
  3. Step 3: Cross multiply
    1,043.99x = 1,440.70 × 578.24
  4. Step 4: Simplify right side
    1,043.99x = 833,063.16
  5. Step 5: Solve for x
    x = 833,063.16/1,043.99
  6. Step 6: Final answer
    x = 797.96

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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.