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Finding the Fourth Proportional to 903, 1,245.56 and 623.26

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Solution

The fourth proportional to 903, 1,245.56 and 623.26 is: 859.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    903 : 1,245.56 = 623.26 : x
  2. Step 2: Convert to fraction form
    903/1,245.56 = 623.26/x
  3. Step 3: Cross multiply
    903x = 1,245.56 × 623.26
  4. Step 4: Simplify right side
    903x = 776,307.73
  5. Step 5: Solve for x
    x = 776,307.73/903
  6. Step 6: Final answer
    x = 859.70

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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.