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Finding the Fourth Proportional to 673.62, 1,015.08 and 554.58

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Solution

The fourth proportional to 673.62, 1,015.08 and 554.58 is: 835.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.62 : 1,015.08 = 554.58 : x
  2. Step 2: Convert to fraction form
    673.62/1,015.08 = 554.58/x
  3. Step 3: Cross multiply
    673.62x = 1,015.08 × 554.58
  4. Step 4: Simplify right side
    673.62x = 562,943.07
  5. Step 5: Solve for x
    x = 562,943.07/673.62
  6. Step 6: Final answer
    x = 835.70

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.