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Finding the Fourth Proportional to 913.58, 1,368.74 and 604.98

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Solution

The fourth proportional to 913.58, 1,368.74 and 604.98 is: 906.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.58 : 1,368.74 = 604.98 : x
  2. Step 2: Convert to fraction form
    913.58/1,368.74 = 604.98/x
  3. Step 3: Cross multiply
    913.58x = 1,368.74 × 604.98
  4. Step 4: Simplify right side
    913.58x = 828,060.33
  5. Step 5: Solve for x
    x = 828,060.33/913.58
  6. Step 6: Final answer
    x = 906.39

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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.