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Finding the Fourth Proportional to 734.51, 1,013.68 and 403.00

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Solution

The fourth proportional to 734.51, 1,013.68 and 403.00 is: 556.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.51 : 1,013.68 = 403.00 : x
  2. Step 2: Convert to fraction form
    734.51/1,013.68 = 403.00/x
  3. Step 3: Cross multiply
    734.51x = 1,013.68 × 403.00
  4. Step 4: Simplify right side
    734.51x = 408,511.77
  5. Step 5: Solve for x
    x = 408,511.77/734.51
  6. Step 6: Final answer
    x = 556.17

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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.