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Finding the Fourth Proportional to 1,303.53, 1,955.55 and 426.27

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Solution

The fourth proportional to 1,303.53, 1,955.55 and 426.27 is: 639.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,303.53 : 1,955.55 = 426.27 : x
  2. Step 2: Convert to fraction form
    1,303.53/1,955.55 = 426.27/x
  3. Step 3: Cross multiply
    1,303.53x = 1,955.55 × 426.27
  4. Step 4: Simplify right side
    1,303.53x = 833,592.30
  5. Step 5: Solve for x
    x = 833,592.30/1,303.53
  6. Step 6: Final answer
    x = 639.49

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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.