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Finding the Fourth Proportional to 903.51, 1,345.02 and 898.05

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Solution

The fourth proportional to 903.51, 1,345.02 and 898.05 is: 1,336.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.51 : 1,345.02 = 898.05 : x
  2. Step 2: Convert to fraction form
    903.51/1,345.02 = 898.05/x
  3. Step 3: Cross multiply
    903.51x = 1,345.02 × 898.05
  4. Step 4: Simplify right side
    903.51x = 1,207,895.21
  5. Step 5: Solve for x
    x = 1,207,895.21/903.51
  6. Step 6: Final answer
    x = 1,336.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.