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Finding the Fourth Proportional to 652, 899.40 and 403.18

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Solution

The fourth proportional to 652, 899.40 and 403.18 is: 556.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    652 : 899.40 = 403.18 : x
  2. Step 2: Convert to fraction form
    652/899.40 = 403.18/x
  3. Step 3: Cross multiply
    652x = 899.40 × 403.18
  4. Step 4: Simplify right side
    652x = 362,620.09
  5. Step 5: Solve for x
    x = 362,620.09/652
  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.