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Finding the Fourth Proportional to 570.98, 787.55 and 551.93

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Solution

The fourth proportional to 570.98, 787.55 and 551.93 is: 761.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.98 : 787.55 = 551.93 : x
  2. Step 2: Convert to fraction form
    570.98/787.55 = 551.93/x
  3. Step 3: Cross multiply
    570.98x = 787.55 × 551.93
  4. Step 4: Simplify right side
    570.98x = 434,675.82
  5. Step 5: Solve for x
    x = 434,675.82/570.98
  6. Step 6: Final answer
    x = 761.28

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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.