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Finding the Fourth Proportional to 903.04, 1,244.36 and 693.20

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Solution

The fourth proportional to 903.04, 1,244.36 and 693.20 is: 955.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.04 : 1,244.36 = 693.20 : x
  2. Step 2: Convert to fraction form
    903.04/1,244.36 = 693.20/x
  3. Step 3: Cross multiply
    903.04x = 1,244.36 × 693.20
  4. Step 4: Simplify right side
    903.04x = 862,590.35
  5. Step 5: Solve for x
    x = 862,590.35/903.04
  6. Step 6: Final answer
    x = 955.21

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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.