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Finding the Fourth Proportional to 585.02, 805.55 and 510.91

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Solution

The fourth proportional to 585.02, 805.55 and 510.91 is: 703.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.02 : 805.55 = 510.91 : x
  2. Step 2: Convert to fraction form
    585.02/805.55 = 510.91/x
  3. Step 3: Cross multiply
    585.02x = 805.55 × 510.91
  4. Step 4: Simplify right side
    585.02x = 411,558.98
  5. Step 5: Solve for x
    x = 411,558.98/585.02
  6. Step 6: Final answer
    x = 703.49

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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.