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Finding the Fourth Proportional to 600.61, 900.76 and 405.51

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Solution

The fourth proportional to 600.61, 900.76 and 405.51 is: 608.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    600.61 : 900.76 = 405.51 : x
  2. Step 2: Convert to fraction form
    600.61/900.76 = 405.51/x
  3. Step 3: Cross multiply
    600.61x = 900.76 × 405.51
  4. Step 4: Simplify right side
    600.61x = 365,267.19
  5. Step 5: Solve for x
    x = 365,267.19/600.61
  6. Step 6: Final answer
    x = 608.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.