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Finding the Fourth Proportional to 913.08, 1,368.54 and 335.64

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Solution

The fourth proportional to 913.08, 1,368.54 and 335.64 is: 503.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.08 : 1,368.54 = 335.64 : x
  2. Step 2: Convert to fraction form
    913.08/1,368.54 = 335.64/x
  3. Step 3: Cross multiply
    913.08x = 1,368.54 × 335.64
  4. Step 4: Simplify right side
    913.08x = 459,336.77
  5. Step 5: Solve for x
    x = 459,336.77/913.08
  6. Step 6: Final answer
    x = 503.06

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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.