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Finding the Fourth Proportional to 655.21, 904.19 and 360.47

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Solution

The fourth proportional to 655.21, 904.19 and 360.47 is: 497.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.21 : 904.19 = 360.47 : x
  2. Step 2: Convert to fraction form
    655.21/904.19 = 360.47/x
  3. Step 3: Cross multiply
    655.21x = 904.19 × 360.47
  4. Step 4: Simplify right side
    655.21x = 325,933.37
  5. Step 5: Solve for x
    x = 325,933.37/655.21
  6. Step 6: Final answer
    x = 497.45

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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.