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Finding the Fourth Proportional to 612.56, 914.52 and 555.14

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Solution

The fourth proportional to 612.56, 914.52 and 555.14 is: 828.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.56 : 914.52 = 555.14 : x
  2. Step 2: Convert to fraction form
    612.56/914.52 = 555.14/x
  3. Step 3: Cross multiply
    612.56x = 914.52 × 555.14
  4. Step 4: Simplify right side
    612.56x = 507,686.63
  5. Step 5: Solve for x
    x = 507,686.63/612.56
  6. Step 6: Final answer
    x = 828.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.