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Finding the Fourth Proportional to 1,303.50, 1,955.58 and 437.85

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Solution

The fourth proportional to 1,303.50, 1,955.58 and 437.85 is: 656.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,303.50 : 1,955.58 = 437.85 : x
  2. Step 2: Convert to fraction form
    1,303.50/1,955.58 = 437.85/x
  3. Step 3: Cross multiply
    1,303.50x = 1,955.58 × 437.85
  4. Step 4: Simplify right side
    1,303.50x = 856,250.70
  5. Step 5: Solve for x
    x = 856,250.70/1,303.50
  6. Step 6: Final answer
    x = 656.89

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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.